Combined rendering kettle and furnace



v (No Model.)

\ T. CASOADEN, Jr.

COMBINED RE'NDERING KETTLE AND FURNACE.

No. 522,586. Patented July 10, 1894.

j /w7nau mo madam/Z",

' UNITED STATES PATENT. OFF-ICE.

THOMAS CASGADEN, JR, OF WATERLOO, IOWA.

COMBINED RENDERING KETTLE AND FURNACE.

SPEOIFICA'IION'forming part of Letters Patent No. 522,586, dated July10, 1894.

Application filedMarch 30,1893- Serial No. 468,356.. (No model.)

act description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawing,and

to letters of reference marked thereon, which forms a part of thisspecification.

The object of this invention is to provide a cheap, convenient andeffective combined fu rnace and kettle, which is especially adapted forthe use of butchers in frying out animal fats and for other purposes;and it consists in the construction and combination of the parts,

as will be hereinafter fully set forth and particularly pointed out inthe claims. In the accompanying drawing, forming part of thisspecification, I have illustrated my invention bya perspective view, inwhich- A designates a stove or furnace, which is constructed in theusual manner and is provlded at its rear end with an opening, a, fromwhich extends a pipe or tube a leading from beneath the kettle. Theupper part of the furnace or heater is provided with an opening adaptedto receive the kettle B, the trunnions b on the kettle resting upon thetop of the furnace, as does also the outwardly projecting rim formedaround the upper edge of the kettle.

C designates a two part cover, which is adapted to be placed over thekettle, the part 0 thereof having an aperture from which extends a pipe0' to the chimney or smoke-stack D, so that the odors given 0% from thecontents of the kettle may escape up the chimney and be carried off withthe products of combustion.

The sides of the furnace bulge outward, so that a space is providedbetween said side walls and the kettle.

The kettle B is made up in the usual manner and isprovided withtrunnions b which rest in recesses formed in the top of the furnace, andthe upper edge of the kettle is flared outward to bear upon the furnace.Rigidly attached to the kettle B is aperforated false bottom (1, theperforations admitting the heat to the bottom of the kettle andpreventing the direct contact of the flames therewith. This perforatedor foramiuous bottom at has an aperture (1 through which passesthe pipe0.,

said pipe leadingfrom the aperture a in the,

furnace to a point beneath the central portion of the true bottom of thekettle. By providing this pipe the influx of air therethrough tends tokeep the lower portion of the true bottom of the kettle at an equaltemperature with the sides. The aperture 0, is provided witha suitabledamper or cut-off (1 whereby the supply of air beneath the true bottomof the kettle may be regulated.

By providing the pipe 0. which leads from the aperture a in the rearwall of the furnace to beneath the central portion of the kettle thereis no liability of the products of combustion passing out through theaforesaid aperture, as when the pipe is heated it will cause an influxof air through the same which is discharged beneath the central part ofthe true bottom of the kettle, and this part being the nearest to thefire would be the hottest part were it not for this provision.

The pipe 0' which connects with the partc of the kettle top and the flueor chimney D can be readily removed, and in placing .the parts togetherthe cover or top is first placed in position upon the kettle beforeconnection is made between the flue or chimney and kettle.

By means of the device herein shown and describedlovercome the liabilityof burning the-fat or other substance which is cooked or rendered in thekettle, as the air which is fed under the kettle will keep the lowerportion at the proper temperature, and it is obvious that the pipeleading from the cover of the kettle to the chimney or flue will conveyobjectionable fumes from the kettle to the chimney.

In removing the cover of the kettle the pipe 0' is lifted from thesection c, and before removing the kettle from the furnace the pipe a ispartially withdrawn through the aperture a in the rear wall of thefurnace so as to become entirely disengaged from the false bottom 01. V

' Having thus described my invention, what Patent, is-= 1. In a combinedkettle and furnace, the combination, of a furnace which is adapted tosupport a kettle, said furnace having an opening a in the rear wallthereof, a kettle B adapted to rest upon and be supported by thefurnace, said kettle havingatrue bottom and a foraminous false bottombeneath the true bottom, the bottoms being of different curvatures sothat the greatest distance between the bottoms will be at the center, apipe 0/ supported at one end by the openinga in the rear wall of thefurnace the other end passing through the foraminous bottom andterminating under the central portion of the kettle between the falseand true bottoms, substantially as shown and for the purpose set forth.

2. In a rendering apparatus, a furnace A having a kettle B with asupplemental foraminous bottom attached thereto and a pipe which entersthe space between the bottom of the kettle and the supplemental bottomthereof, said pipe leading through the outer wall of the furnace, andthrough an aperture (1 in the foraminous bottom of the kettlesubstantially as shown and for the purpose set forth.

3. In combination with a furnaceAhaving an aperture in one of the sidewalls thereof and a top having recesses and a pipe or fine D with anaperture therein, of akettleB having trunnions b which bear in therecesses 1n the top, said kettle having below its true bottom aforaminous false bottom, the space between the true and false bottombeing connected by a pipe with the aperture in the side wall of thefurnace, together with a cover made up of two sections the smallersection having an opening and pipe which communicate with the aperturein the flue D, the complete device forming a portable renderingapparatus for the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

THOMAS OASOADEN, JR.

Witnesses:

THEODORE A. J ENNEY, T. M. WATTS.

